Test/review of Xtar PB2S Charger & power bank

While re-reading the review, I noticed that this one is the PB2S with the “Red LED” display, also mentioned here: [review] XTAR PB2S charger/powerbank - #20 by TheIntruder

Is it possible that the “Red LED” PB2S has some internal differences from the regular “white LED” variants? (The “Red LED” PB2S is possibly an earlier variant?)